Bug 94858

Summary: McNopper Compute Shader Example40 broken on Intel
Product: Mesa Reporter: Christoph Haag <haagch>
Component: Drivers/DRI/i965Assignee: Jordan Justen <jljusten>
Status: RESOLVED FIXED QA Contact: Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity: normal    
Priority: medium CC: idr
Version: git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments: apitrace

Description Christoph Haag 2016-04-07 13:11:58 UTC 
Created attachment 122788 [details]
apitrace

I've been running these examples: https://github.com/McNopper/OpenGL

There don't seem to be build instructions... This works for me:

cd GLUS
cmake .
make
cd ..
cd Example40
gcc src/*.c -I ../GLUS/src/ -lGLEW -lGL -lm -L ../GLUS/ -l:libGLUS.a -lglfw
MESA_GL_VERSION_OVERRIDE=4.3 MESA_GLSL_VERSION_OVERRIDE=430 ./a.out

Intel renders this brokenness: https://www.youtube.com/watch?v=BCIh5MTDRNo
radeonsi renders this, probably correctly: https://www.youtube.com/watch?v=Xlz36lyMFcg

Both videos are actually created with mesa git from the same attached apitrace on this hardware:

00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Wimbledon XT [Radeon HD 7970M] (rev ff)

There are no shader compile errors and mesa and apitrace report no GL errors I can see so I assume intel should be able to render it correctly.
Comment 1 Ian Romanick 2016-04-08 18:19:33 UTC 
Jordan, can you take a look?
Comment 2 Christoph Haag 2016-05-28 13:07:28 UTC 
Works now. Possibly because of the recent changes like
https://cgit.freedesktop.org/mesa/mesa/commit/?id=357495b94dad4101a5491ed30782574162de58db
(but I didn't test it)

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